Carburetion atomizer screen for inlet manifold systems

ABSTRACT

BY MAKING A SCREEN OF EXPANDED METAL THROUGH WHICH THE AIR/FUEL MIXTURE PASSES ON THE WAY TO THE INTAKE VALVE, THE ANGLE OF INCLINATION OF THE FLAT STRIPS WHICH ARE IN THE FORM OF A HOLLOW CYLINDER MADE OF EXPANDED METAL IS SUCH THAT FAR GREATER ATOMIZATION AND THUS FAR GREATER INTIMATE MIXING OF THE FUEL/AIR MIXTURE IS ACCOMPLISHED THAN BY THE USE OF CONVENTIONAL SCREEN MATERIAL NORMALLY USED IN AN INTAKE MANIFOLD SYSTEM FOR INTERNAL COMBUSTION ENGINES.

t- 1974 s. PRYGROCKI 3,832,152

GARBUBETIQ B'I'QMIZER SCREEN FOR INLET MANIFOLD SYSTES Filad June 23, 1972 FIG. 6 PRIOR ART FIG. .3

' 3,832,152 CARBURETION ATOMIZER SCREEN FOR INLET MANIFOLD SYSTEMS Bohdan Prygrocki, Winnipeg, Manitoba, Canada, assignor to Remsoh Enterprises Ltd., Winnipeg, Manitoba, Canada Filed June 28, 1972, Ser. No. 267,032

Int. Cl. F02m 29/00 US. Cl. 48-180 C 1 Claim ABSTRACT OF THE DISCLOSURE By making a screen of expanded metal through which the air/ fuel mixture passes on the way to the intake valve, the angle of inclination of the flat strips which are in the form of a hollow cylinder made of expanded metal is such that far greater atomization and thus far greater intimate mixing of the fuel/ air mixture is accomplished than by the use of conventional screen material normally used in an intake manifold system for internal combustion engines.

BACKGROUND OF THE INVENTION This invention relates to new and useful improvements in screens for assisting in the atomization of liquid fuel and air mixtures normally used in the carburetion systems of automotive or other internal combustion engines.

It is well known that if the air/fuel mixture can be mixed intimately by the breaking up of the fuel into atomized droplets, greater efliciency in the use of the fuel is obtained and many carburetion systems have been devised which includes a section of conventional screening either in the form of a cone, cylinder or flat sheet through which the mixture passes thus forcing the liquid portion of the mixture to be divided into relatively small droplets.

It is also well known that if greater turbulence could be obtained of this atomized mixture, then an even better atomization and intimate mixing could be obtained.

The present invention overcomes disadvantages inherent with using conventional screening inasmuch as conventional screening is normally manufactured of fine wire having a cylindrical cross section.

The present invention is a screen formed from expanded metal the individual strips of which are relatively rectangular when viewed in cross section and which are inclined at an angle from the vertical thus directing the air/fuel mixture at an angle and causing considerable turbulence after the mixture has passed through the screen.

The principal object and essence of the invention is therefore to provide a device of the character herewithin described which improves the atomization of the air/fuel mixture used in carburetion.

Another object of the invention is to provide a device of the character herewithin described which can be used in single or multiple barrel carburetion systems, it only being necessary to increase the number of screens used.

A yet further object of the invention is to provide a device of the character herewithin described which is simple in construction, economical in manufacture and otherwise well suited to the purpose for which it is designed.

With the foregoing objects in view, and such other or further purposes, advantages or novel features as may become apparent from consideration of this disclosure and specification, the present invention consists of the inventive concept which is comprised, embodied, embraced, or included in the means, method, process, product, construction, composition, arrangement of parts, or new use of any of the foregoing, herein exemplified in one or more specific embodiments of such concept, reference being had to the accompanying drawings in which:

Stat tenfjo' 3,832,152 Patented Aug-1.27, 1974 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevation partially schematic of a c arburetion system and an intake manifold with a'schematic view of the screen installedtherein.

FIG. 2 is an enlarged front elevationof the screen per FIG. 3 is a top plan view of FIG.2.'

FIG. 4 is a section along the line 4-4 of FIG. 2. 1

FIG. 5 is an enlarged section along the line 5-5 of FIG. 2.

FIG. 6 is a schematic view showing the air flow of a carburetion system utilizing a conventional screen.

FIG. 7 is a view similar to FIG. 6 but showing the turbulence engendered with the use of the present invention.

In the drawings like characters of reference indicate corresponding parts in the different figures.

DETAILED DESCRIPTION Proceeding therefore to describe the invention in detail, it should be pointed out that although only a single downdraft carburetion system is shown, nevertheless the device can be used in multiple barrelled carburetion systems.

Reference character 10 shows the air cleaner of a conventional downdraft carburetor 11 which in turn is connected to a manifold system collectively designated '12 including the vertical portion 13 and the horizontal portion 14, it being understood that the air/fuel mixture passes through the vertical portion 13 into the horizontal portion 14 and divided to flow in either direction as shown by the arrows 15 in order that it may reach the intake valves of the engine (not illustrated).

The screen collectively designated 16 is preferably situated within the horizontal portion 14 and extends from the junction of vertical portion 13 with this horizontal portion 14 downwardly to the lower side 17 of the horizontal portion.

It is a cylinder of expanded metal lathe 18 having flanges 19 formed on the upper and lower ends thereof so that it can be situated within the portion 14 as illustrated.

The material making up the screen is relatively thin strips 20 having a substantially narrow, rectangular configuration when viewed in cross section and being formed and joined one to the other in a honeycomb configuration as clearly illustrated. The individual strips 20 incline outwardly and downwardly from the vertical axis 21 of the screen as clearly shown thus forcing the air/ fuel mixture downwardly at an angle and causing excessive turbulence.

FIG. 6 shows a conventional screen 22 formed of wires having a cylindrical or round cross section and the air flow coming from the vertical portion 13 to the horizontal portion 14 is shown by, the arrows 23, it being understood that the circular or cylindrical configuration of the wires eliminates excessive frictional turbulence .being generated.

By contrast, in FIG. 7 the lines 24 show the excessive turbulence generated by the angular inclination of the individual strips .20 making up the wire screen 16 thus giving greater atomization and mixing of the air/fuel mixture.

In both cases, of course, there is a dividing buffer zone 25 formed by the rapid movement of the air thus giving a natural division to the air/fuel mixture in both directions.

Various modifications may be constructed or performed within the scope of the inventive concept disclosed. Therefore what has been set forth is intended to illustrate "such concept and is not for the purpose of limiting protection to any herein particularly described embodiment there'of.

What I claim as my invention is:

1. In a carburetor system for internal combustion engines which includes a carburetor for supplying a mixture of liquid fuel and air and an intake manifold system; an

at'omizer's ereen in said intakeiimanifold system through 3,077,39-1 2/1963 Gulfra 48-180 R whichualLoLsaid.imixturewpasses said atomizer. screen in 1,3 0, 62 5/1920 Lapham ,123 -,1,41 being formed from expandedrnetal lathe having individual 3,346,246 10/ 1967 Loetel et a1 261-103 flat strips inclining at an angle from the vertical, said 3,070,198 12/ 1962 Haskell 55-525 screen being in sthe form of'a hqllow cylinder which ex- 5 3,083,66 4/ 196-3 Zeidler 113-118 tends from the vertical part of the manif ld system into 2,070,073 2/1937 Walton 183-69 and across the horiiontal portion thereof. t a

' S. LEON BASHORE, Primary Examiner Refev'ems 3? 1 I i P. F. KRATZ, Assistant Examiner UNITED STATES PATENTS 10 7 7 1,689,433 10/1928 -Har-vey 48-I80 R S- C X- 2,995,199 8/1961. Myers 23288 F 48-180 R; 123-431. g 

